wp_enqueue_registered_block_scripts_and_styles()

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Performance profile

How much work a call to wp_enqueue_registered_block_scripts_and_styles() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class

Light

Touches nothing outside its own arguments.

Scaling

Scales with input

The body loops, so the work grows with how much data it finds.

Instructions

7–23

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 74.

Plugin surface

None

Nothing here hands control to plugin code.

Called by

0

Nothing in core calls this; the cost is only what you spend yourself.

What it touches

• hookthird-party callbacksapply_filters()one call below wp_enqueue_registered_block_scripts_and_styles()

Further down the call graph this can also reach option, cache, serialize, transient and query. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.

What one call costs · 5 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost wp_enqueue_registered_block_scripts_and_styles() can have, taken from its control-flow graph on PHP 8.5.

Uses · 10

• wp_should_load_block_assets_on_demand()Checks whether block styles should be loaded only on-render.
• wp_is_block_theme()Returns whether the active theme is a block-based theme or not.
• has_action()Checks if any action has been registered for a hook.
• wp_register_style()Registers a CSS stylesheet.
• wp_add_inline_style()Adds extra CSS styles to a registered stylesheet.
• wp_enqueue_style()Enqueues a CSS stylesheet.
• is_admin()Determines whether the current request is for an administrative interface page.
• wp_should_load_block_editor_scripts_and_styles()Checks if the editor scripts and styles for all registered block types should be enqueued on the current screen.
• wp_enqueue_script()Enqueues a script.
• WP_Block_Type_Registry::get_instance()Utility method to retrieve the main instance of the class.

Source code

View on Trac ↗View on GitHub ↗

2773function wp_enqueue_registered_block_scripts_and_styles() {2774	if ( wp_should_load_block_assets_on_demand() ) {2775		/**2776		 * Add placeholder for where block styles would historically get enqueued in a classic theme when block assets2777		 * are not loaded on demand. This happens right after {@see wp_common_block_scripts_and_styles()} is called2778		 * at which time wp-block-library is enqueued.2779		 */2780		if ( ! wp_is_block_theme() && has_action( 'wp_template_enhancement_output_buffer_started', 'wp_hoist_late_printed_styles' ) ) {2781			wp_register_style( 'wp-block-styles-placeholder', false );2782			wp_add_inline_style( 'wp-block-styles-placeholder', ':root { --wp-internal-comment: "Placeholder for wp_hoist_late_printed_styles() to replace with the block styles printed at wp_footer." }' );2783			wp_enqueue_style( 'wp-block-styles-placeholder' );2784		}2785		return;2786	}2787 2788	$load_editor_scripts_and_styles = is_admin() && wp_should_load_block_editor_scripts_and_styles();2789 2790	$block_registry = WP_Block_Type_Registry::get_instance();2791 2792	/*2793	 * Block styles are only enqueued if they're registered. For core blocks, this is only the case if2794	 * `wp_should_load_separate_core_block_assets()` returns true. Otherwise they use the single combined2795	 * 'wp-block-library` stylesheet. See also `register_core_block_style_handles()`.2796	 * Since `wp_enqueue_style()` does not trigger warnings if the style is not registered, it is okay to not cater for2797	 * this behavior here and simply call `wp_enqueue_style()` unconditionally.2798	 */2799	foreach ( $block_registry->get_all_registered() as $block_name => $block_type ) {2800		// Front-end and editor styles.2801		foreach ( $block_type->style_handles as $style_handle ) {2802			wp_enqueue_style( $style_handle );2803		}2804 2805		// Front-end and editor scripts.2806		foreach ( $block_type->script_handles as $script_handle ) {2807			wp_enqueue_script( $script_handle );2808		}2809 2810		if ( $load_editor_scripts_and_styles ) {2811			// Editor styles.2812			foreach ( $block_type->editor_style_handles as $editor_style_handle ) {2813				wp_enqueue_style( $editor_style_handle );2814			}2815 2816			// Editor scripts.2817			foreach ( $block_type->editor_script_handles as $editor_script_handle ) {2818				wp_enqueue_script( $editor_script_handle );2819			}2820		}2821	}2822}

Changelog

Introduced in 5.0.0. Unchanged from 6.7.7 through 7.1.0.

1. 6.7.7
2. 6.8.8
3. 6.9.7
4. 7.0.4
5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data

Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/script-loader.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

Something wrong on this page? Report it and it gets fixed in the next regeneration.